Multiple-block mold.



J. F. McELROY.

MULTIPLE BLOCK MOLD.

APPLICATION FILED JULY 22.1915.

Patented Oct. 22, 1918.

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Z 0 t n a 0 w 5 @Hfouaua v J. F. McELROY.

MULTIPLE BLOCK MDLD.

APPLICATION FILED JULY 2 2, 191s.

FIG. 5.

J. F. McELROY.

MULTIPLE BLOCK MOLD.

APPLICATION FILED JULY 22. I918.

3382,6071. I Patented 00s. 22, 1918.

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FIG. 7.

J. F. MCELROY.

MULTIPLE BLOCK MOLD.

APPLICATION FILED JULY 22. 1918,

1,282,607. Patented Oct. 22, 1918.

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7 throughout the several views,

JOHN F. McELROY, or CEDAR RAPIDS, IOWA, ASSIGNOR or THREE-FOURTI-IS TO FREDERICK nnroxson, E. s. sEELY, AND 0. a. TIFFANY, ALL or onmm nnrrns, IOWA.

MULTIPLE-BLOCK MOLD.

Specification of Letters Patent.

Patented Got. 22, 1918.

Application filed July 22, 1918. Serial No. 246,042.

sired size and shape from poured cement,

the construction being suchthat the mold is readily and quickly detached from the hardened blocks.

A further object of the invention is the provision of a multiple mold preferably formed of galvanized sheet metal, the portions of which are readily separable and by reason of their resiliency are easily removed from the completed blocks when in their hardened state without mutilating or in uring the blocks.

A still further object of the invention is the provision of a mold for forming blocks by pouring wet CBlIlGIlhlIltO the same whereby the blocks are more solidly formed and is insured that every portion of the mold is filled with the plastic material while such blocks are also more impervious tomoisture, are harder, firmer and more lasting.

lVith these general objects in view, the device will be more fully described showing a mold that is light in weight and can be readily transported when disassembled, the same being capable of forming a plurality of blocks substantially H-shaped in cross section and providing continuous air spaces, both vertical and horizontal, throughout a wall formed of such blocks.

In the drawings forminga part of this application and in which like reference characters designate corresponding parts Figure 1 is a top plan view of the complete mold;

Fig. 2 is a side elevation thereof showing a filling hopper and a smoothing roller mounted thereon;

Fig. 3 is a vertical longitudinal sectional view through a portion of the same; Fig. 4 is an enlarged view partially in top plan and partly in longitudinal horizontal section of the same;

Fig. 5 is a vertical transverse sectional view throughthe device;

Fig. 6 is a vertical sectional View through one of the end walls of the mold;

Fig. 7 is an end elevational view of the device showing the roller mounted thereon;

Fig. 8. is a similar view showing the hopper positioned upon the mold;

gig. 9 is a view of one of the connecting ro s; p

Fig. 10 is a longitudinal sectional view through one of the completed blocks;

Fig. 11 is a transverse sectional view thereof;

Fig. 12 is a perspective view of one of the core forming members;

Fig. 13 is a perspective view of core members for the mold illustrating a means of Iorming shorter blocks; and

Fig. 14 is a perspective view of a partition member whereby gabled or inclined ends may be formed upon a block.

My form of mold may be provided of any length for forming blocks of poured cement in any desired number and includes longitudinal sides 10 with transversely positioned core members 11 in the form of partitions connected therebetween and spaced a suitable distance apart for forming blocks of v the desired width.

The sides 10 have inwardly projecting U- shaped central portions 12 with slightly inclined upper and lower sides 13 for forming the cutaway or interrupted end portions 1 1 in the completed block, such as 15. I In- .wardly struck ears 16 having flared ends are sides 10 and secured together by rivets 18 with their U-shaped central portions 19 extending in. opposite directions. The entire device is preferably formed of resilient sheet metal and the ends 20 of the core sections 11 being obliquely cutaway permits, the U- shaped portions 12 of the sides 10 to be iiisorted within the ends 20 of the sections 17 of each core member 11. This positioning of the core members between and in contact with the sides 10 slightly spreads apart for U-shaped portions 19 of the core members, assisting in retaining the device assembled. Connecting rods 21 each having a hook 22 at one end thereof are inserted through the opposite openings 23 formed in the sides 10 by inwardly striking the ears 16. Angular iron cleats 2d are provided at opposite points upon the sides 10 adapted for engagement by the hooks 22 at one side of the mold and with a suitable notch 25 of a pivoted handle 26 at the opposite side lof the mold.

In this manner, the connecting rods 21 po-.

.sitioned through the openings 23 and attached to the opposite cleats 24L retain the device assembled with the core members 11 locked in spaced relations between the sides 10. A bent portion 27 is provided in each of the rods 21 and the rods being resilient, they form elastic ties or connectors between the sides 10.

A substantially straight Wall is provided at each end of the mold consisting of two plates 28 and. 29, one of which is provided with guides 30 at its opposite ends for slidably receiving the other plate therebetween. This construction is best illustrated in Figs. 6, 7 and 8 of the drawings and it will be seen that the end walls so formed permit the slight resilient operation of the core section 17 which is attached to the plates 28 and 29 by rivets 31. The central portions 19 of the core members 11 form the longitudinal interrupted portions 32 at the opposite sides of the block 15.

Inwardly projecting flanges 33 are provided at the bottom of the sides 10, while similar flanges 3 1 are provided upon the bottom of each core section 17 for supporting a pallet 35 constituting the bottom of each mold portion for supporting the blocks. An outwardly projecting flange 36 is provided at the upper edge of each side 10 upon which a roller 37 is adapted to travel. The reduced ends 38 of said roller travel upon the flanges 36 while the enlarged central portion 39 travels over the poured cement orother material with which the molds are filled. This roller is adapted for em bedding the facing material into the soft cement. Any desired degree of pressure may be eXterted upon the roller during its travel longitudinally of the device, while the increased diameter of the material engaging portion of the roller imparts a that neeaeor ing or troweling effect to the facing mate rial firmly embedding the same into the concrete mixture.

A hopper 4:0 is positionable upon the top flanges orrails 36 of the sides 10 which form a track, the said hopper having an inclined bottom 41 opening above the mold and adapted when filled with prepared facing material, for instance, to be pushed from one end of the device to the other for evenly distributing the facing upon the soft blocks while the roller 39 is adapted for traveling behind the hopper for embedding-the facing as above set forth. Two oppositely positioned core sections 17 are illustrated in Fig. 13 of the same form as the core section 17, but with their central U-shaped portions 19 provided wtih slots '12 adapted for the reception of a partition 43 and whereby the block will be divided into two parts hav ing squared or slightly inclined ends as desired. It will be understood that the relative sizes of the blocks which are formed between said two core sections 17 will depend upon the position of the parts 43. in a similar manner, a substantially l'l-shaped partition l-i may be positioned between the side sections of adjacent core members for forming gablcd blocks with inclined ends. The

partition a l has openings 45 for IGQGlVlDg the central portions 19 of the core sections;

partition M which may engage the adjacent portions of either the core sections 17 at the sides of the block or the sides 10 of the mold at the end of the block. Different forms of blocks and ends may be readily made in this manner.

The complete operation of the device will be apparent from this detailed description thereof, the cement or concrete mixture havbe taken out of the mold, the rods 21 are removed by detaching the handles 26 and hooks 22 from the cleats 24, thereby releasing the sides 10 which are readily separated,

from the blocks and the course 11. The end core members, including the plates 28 and 29, with the member 1.? attached thereto, are released by removing the sides 10, which sides, it will be noted,.are provided with brackets 17 restrainingly positioned out wardly of the core ends when the device is assembled. The endblocks 15 with their pallets 35 may be then freely removed while while suitable ends 46 are provided for the a tees-nor the remaining blocks are readily separable from the cores 11. The portions 19 of the core' section 17 being spread apart when connected with the sides 10, the removal of the sides permits thecentral portions of the cores to slightly retract and automatically loosening the core sections 17 from the blocks 15.

A mold that has long life is provided that is easily and quickly assembled and may be readily removed from the blocks when the work of forming the same has been completed. It will be understood that the resiliency of the sheet metal of which the device is mainly formed, as well as the resiliency of the connecting rods 21 constitutes a material use of advantage in my invention. While the form of the device as herein set forth is believed to be preferable,

it will be understood that minor changes may be made without departing from the spirit and scope of the invention as set forth in the claims.

What I claim as new is 1. A mold comprising side walls having inwardly projecting portions, resilient core forming sections between said sides and inclosing said inwardly projection portions, and resilient binding rods detachably connected between thesaid sides when the device is assembled.

2. A mold comprising side Walls having inwardly projecting portions, resilient core forming sections between said sides and inclosing said inwardly projecting portions, cleats upon the said sides, resilient rods adapted for detachable connection between the said cleats when the device is assembled and whereby the sides and core members are adapted for separation upon the removal of said rods.

3. A mold comprising sides having inwardly projecting portions, a plurality of resilient core members positioned between said sides and having cutaway ends resiliently mounted upon said inwardly projecting portions, and binding members between the said sides.

4. A mold comprising sides having i11- ward'ly projecting portions, a plurality of resilient core members positioned between said sides and having cutaway ends resiliently mounted upon said inwardly projecting portions, whereby cores are retracted when detached from the sides, the said sides having opposite openings therein, and connecting rods positioned through said openings and extending through the cores removably attached to the opposite sides.

5. A plurality mold comprising opposite sheet metal sides having inwardly projecting longitudinal portions having struck out portions forming ears projecting inwardly of the device, and resilient core' members positioned between said sides with cutaway ends resiliently engaging the inwardly projecting portions of the sides with said ears inclosed within the cores when the device is assembled.

6. A plurality mold comprising opposite sheet metal sides having inwardly projecting longitudinal portions having struck out portions forming ears projecting inwardly of the device, resilient core members positioned between said sides with cutaway ends resiliently engaging the inwardly projecting portions of the sides with said ears inclosed within the cores when the device is assembled, cleats upwardly carried by the sides, and resilient rods positioned through the cores and through said openings of the sides detachably connected to the said cleats.

7. A plurality I mold comprising sheet metal sides, resilient cores positioned in spaced relations therebetween in expanded positions when the device is assembled, and elastic connections detachably provided be tween the said sides.

8. A plurality mold comprising sheet metal sides, resilient cores positioned in spaced relations therebetween in expanded positions when the device is assembled, resilient connections detachably provided be tween the said sides, inwardly projecting flanges upon the bottoms of said sides and cores, and supporting pallet for the blocks to be formed positioned upon said flanges.

9. A plurality mold comprising sheet metal sides, resilient cores positioned in spaced relations therebetween in expanded positions when the device is assembled, resilient connections detachably provided between the said sides, inwardly projecting flanges upon the bottoms of said sides and cores, supporting pallet for the blocks to be formed positioned upon said flanges, outwardly projecting flanges upon said sides forming a track adapted for mounting a metal distributing hopper, and a roller thereon.

vl0. A plurality mold comprising sheet metal sides, resilient core members positioned between said sides adapted for expansion when the device is assembled and for retraction when disassembled, detachable connections between the sides, and slidably connected plates carried by the end ones of said core members.

11. A plurality mold comprising opposite sides, resilient core sections positioned therebetween in contact therewith providing receiving portions for block forming material therebetween, and a. partition positioned longitudinally of the device between adjacent core sections.

12. A plurality mold comprising sheet metal sides, resilient core sections positioned in spaced relations therebetween forming material receiving portions, and H-shaped partitions adapted for arrangement overlying the adjacent core sections for forming inclined ends upon the block formed in the device.

13. A device of the class described C0111- a connector therefor including a resilient strip having a hook atone end adapted for naaaeov engaging one of said members, a handle pivoted to the other end of the strip provided With a side notch adapted for overlying the other one of said members, the retainer being detachable upon a pivotal movement of the handle.

In testimony whereof I aifix my signature.

JOHN F. MOELROY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of I'atents.

Washington, D. C. r 

